* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #0f0f1a, #1a1a2e, #16213e);
    font-family: 'Segoe UI', sans-serif;
    color: #fff;
    padding: 40px 20px 60px;
}

header {
    text-align: center;
    margin-bottom: 48px;
}

header h1 {
    font-size: 2.8rem;
    background: linear-gradient(90deg, #00ff88, #00ccff, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

header .subtitle {
    color: #94a3b8;
    font-size: 1.1rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 28px 24px;
    text-decoration: none;
    color: #fff;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top left, var(--accent, #00ff88) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--accent, #00ff88);
    box-shadow: 0 8px 32px color-mix(in srgb, var(--accent, #00ff88) 30%, transparent);
}

.card:hover::before {
    opacity: 0.07;
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 4px;
}

.card h2 {
    font-size: 1.2rem;
    color: var(--accent, #00ff88);
}

.card p {
    font-size: 0.9rem;
    color: #94a3b8;
    line-height: 1.5;
    flex: 1;
}

.tag {
    display: inline-block;
    margin-top: 8px;
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid var(--accent, #00ff88);
    color: var(--accent, #00ff88);
    width: fit-content;
}

footer {
    text-align: center;
    margin-top: 60px;
    color: #475569;
    font-size: 0.9rem;
}

@media (max-width: 480px) {
    header h1 { font-size: 2rem; }
    .grid { grid-template-columns: 1fr; }
}